CN108801878A - A kind of method of determining accumulation bulk granular material voidage - Google Patents

A kind of method of determining accumulation bulk granular material voidage Download PDF

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Publication number
CN108801878A
CN108801878A CN201810752643.XA CN201810752643A CN108801878A CN 108801878 A CN108801878 A CN 108801878A CN 201810752643 A CN201810752643 A CN 201810752643A CN 108801878 A CN108801878 A CN 108801878A
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China
Prior art keywords
voidage
volume
natural packing
axis
packing volume
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Pending
Application number
CN201810752643.XA
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Chinese (zh)
Inventor
赖雄鸣
计天晨
刘亿圣
王成
张勇
缑锦
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Huaqiao University
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Huaqiao University
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Priority to CN201810752643.XA priority Critical patent/CN108801878A/en
Publication of CN108801878A publication Critical patent/CN108801878A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry

Abstract

The present invention provide it is a kind of it is determining accumulation bulk granular material voidage method, 1) acquisition material natural packing volume：Accumulate bulk granular material when by the measured zone of laser measuring apparatus, obtain material profile and elevation information utilize integral and calculating material natural packing volume V0'；2) material particles volume is acquired：Obtain material natural packing volume information V0' after, material is placed in water tank, according to the SEA LEVEL VARIATION value in water tank to get the particle volume V of material；3) voidage P' is calculated：Material natural packing volume and the difference of particle volume are voidage between material particles, and the percent value of voidage and material natural packing volume is to obtain the voidage P' of accumulation bulk granular material between material particles.The present invention can solve the prior art there are measurement methods relatively complicated, take, effort, human factor is more, be easy to cause the problems such as large error influences measurement result.

Description

A kind of method of determining accumulation bulk granular material voidage
【Technical field】
The present invention relates to a kind of methods of determining accumulation bulk granular material voidage.
【Background technology】
Material voidage refers to that bulk granular material is under stacking states, voidage and entire bulk material between particle The percentage of volume reflects the compactness extent mutually filled between material particles.What voidage considered is between material pellet Gap, it is particularly significant to the gap structure for studying bulk granular material, but since the size dimension of general particle is different, filling side Formula is different, so it is difficult to carrying out a relatively accurate qualitative description.
The voidage of material, it will be appreciated that the construction feature of material, convenient for grasping the characteristic of material and using function, such as： The voidage of bituminous paving is directly related with the performance on road surface, and it is existing to reduce the issuable various damages of bituminous paving As, it is necessary to the voidage of stringent control bituminous paving；In concrete proportioning design, voidage can be used as control aggregate Grading and the foundation for calculating sand factor；It usually requires to measure the quality and density for accumulating bulk granular material, material could be obtained Voidage, but the measurement of quality of material need to be measured by container, and measurement method is relatively complicated, and human factor is more, influences Measurement result；And if the measurement of apparent density encounters scleroid bulk granular material, such as sand, stone, need to wear into fine powder measurement Its apparent density takes, effort, generally measures its density approximation in application process and replaces its apparent density, causes larger mistake Difference.It is therefore proposed that a kind of method of determining accumulation bulk granular material voidage, may be implemented that accumulation shot shape is precisely calculated The voidage of material, and be generalized to apply in industry-by-industry and be of great significance.
【Invention content】
The technical problem to be solved in the present invention is to provide a kind of method of determining accumulation bulk granular material voidage, energy Enough solving the prior art, that there are measurement methods is relatively complicated, takes, effort, human factor is more, be easy to cause large error shadow The problems such as ringing measurement result.
The invention is realized in this way：
A kind of method of determining accumulation bulk granular material voidage, steps are as follows for the method：
1) material natural packing volume is acquired：Bulk granular material is accumulated when by the measured zone of laser measuring apparatus, is obtained Take the profile and elevation information of material；According to the profile and height of material, the natural packing volume of integral and calculating material is utilized V0', the natural packing volume calculation formula is as follows：
Wherein, D is the contour area of material；X is the X axis coordinate value of measured zone, and y is the Y axis coordinate value of measured zone； S (x, y) is the area function of material；H=h (x, y) is the height function of material；Δ x be two laser points x-axis direction away from Deviation；Δ y is range difference of two laser points in y-axis direction；hi,jTo be located at (xi、yj) height at point, i=1~n, j=1 ~m；
The numerical computations of n and m are as follows：
N=(xn-x1)/Δ x+1, m=(ym-y1)/Δ y+1,
Wherein, x1Min coordinates value of the material that expression laser measuring apparatus scans in X-axis, xnIndicate laser measurement Maximum coordinate value among of the material that instrument scans in X-axis, y1Indicate the material that scans of laser measuring apparatus in Y-axis most Small coordinate value, ymMaximum coordinate value among of the material that expression laser measuring apparatus scans in Y-axis；
2) material particles volume is acquired：Obtain material natural packing volume information V0' after, material is placed in water tank, according to SEA LEVEL VARIATION in water tank, can be by water tank raw water position H1And the water level H after material is added2The particle volume of material, i.e. material can be obtained Particle volume V=(H2-H1)S0, wherein S0For the floor space of water tank；
3) voidage P' is calculated：It, further can be by the basis of obtaining material natural packing volume and particle volume Formula：
Obtain the voidage P' of accumulation bulk granular material.
The invention has the advantages that：
The present invention is not necessarily to carry out the measurement and calculating of quality of material, density, simple in structure, easy to operation, and it is accurate to realize The voidage for calculating accumulation bulk granular material, improves work efficiency, and saves human resources.
【Description of the drawings】
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the coordinate schematic diagram of present invention acquisition material natural packing volume.
【Specific implementation mode】
Refering to fig. 1, the present invention relates to a kind of method of determining accumulation bulk granular material voidage, the method step is such as Under：
1) material natural packing volume is acquired：Bulk granular material is accumulated when by the measured zone of laser measuring apparatus, is obtained Take the profile and elevation information of material；According to the profile and height of material, the natural packing volume of integral and calculating material is utilized V0', the natural packing volume calculation formula is as follows：
Wherein, D is the contour area of material；X is the X axis coordinate value of measured zone, and y is the Y axis coordinate value of measured zone； S (x, y) is the area function of material；H=h (x, y) is the height function of material；Δ x be two laser points x-axis direction away from Deviation；Δ y is range difference of two laser points in y-axis direction；hi,jTo be located at (xi、yj) height at point, i=1~n, j=1 ~m；
The numerical computations of n and m are as follows：
N=(xn-x1)/Δ x+1, m=(ym-y1)/Δ y+1,
Wherein, x1Min coordinates value of the material that expression laser measuring apparatus scans in X-axis, xnIndicate laser measurement Maximum coordinate value among of the material that instrument scans in X-axis, y1Indicate the material that scans of laser measuring apparatus in Y-axis most Small coordinate value, ymMaximum coordinate value among of the material that expression laser measuring apparatus scans in Y-axis；
2) material particles volume is acquired：Obtain material natural packing volume information V0' after, material is placed in water tank, is utilized Water is not easy to react with material or the principle of dissolved material can be by water tank raw water position H according to the SEA LEVEL VARIATION in water tank1 And the water level H after material is added2The particle volume of material, i.e. the particle volume V=(H of material can be obtained2-H1)S0, wherein S0For water The floor space of case；
3) voidage P' is calculated：It, further can be by the basis of obtaining material natural packing volume and particle volume Formula：
Obtain the voidage P' of accumulation bulk granular material.
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment
The determination of asphaltene voidage：
1) material natural packing volume is acquired：Asphaltene obtains object when by the measured zone of line laser measuring instrument The profile and elevation information of material；According to the profile and height of material, the natural packing volume V of integral and calculating material is utilized0'= 3625cm3,
2) material particles volume is acquired：Obtain asphaltene natural packing volume information V0' after, material is placed in water tank, It, can be by water tank raw water position H according to the SEA LEVEL VARIATION in water tank1And the water level H after material is added2The particle volume of material can be obtained, i.e., The particle volume V=H of material2×S0-H1×S0=10516cm3-7000cm3=3516cm3；
3) voidage P' is calculated：On the basis of obtaining asphaltene natural packing volume with particle volume, further It can be by formula：
The voidage P' for obtaining asphaltene is 3%.
The present invention is not necessarily to carry out the measurement and calculating of quality of material, density, simple in structure, easy to operation, and it is accurate to realize The voidage for calculating accumulation bulk granular material, improves work efficiency, and saves human resources.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this The technical staff in field modification and variation equivalent made by the spirit according to the present invention, should all cover the present invention's In scope of the claimed protection.

Claims (1)

1. a kind of method of determining accumulation bulk granular material voidage, it is characterised in that：Steps are as follows for the method：
1) material natural packing volume is acquired：Bulk granular material is accumulated when by the measured zone of laser measuring apparatus, obtains object The profile and elevation information of material；According to the profile and height of material, the natural packing volume V of integral and calculating material is utilized0', institute It is as follows to state natural packing volume calculation formula：
Wherein, D is the contour area of material；X is the X axis coordinate value of measured zone, and y is the Y axis coordinate value of measured zone；s(x, Y) it is the area function of material；H=h (x, y) is the height function of material；Δ x is distance of two laser points in x-axis direction Difference；Δ y is range difference of two laser points in y-axis direction；hi,jTo be located at (xi、yj) height at point, i=1~n, j=1~ m；
The numerical computations of n and m are as follows：
N=(xn-x1)/Δ x+1, m=(ym-y1)/Δ y+1,
Wherein, x1Min coordinates value of the material that expression laser measuring apparatus scans in X-axis, xnIndicate that laser measuring apparatus is swept Maximum coordinate value among of the material retouched in X-axis, y1Indicate material most the sitting for a while in Y-axis that laser measuring apparatus scans Scale value, ymMaximum coordinate value among of the material that expression laser measuring apparatus scans in Y-axis；
2) material particles volume is acquired：Obtain material natural packing volume information V0' after, material is placed in water tank, according in water tank SEA LEVEL VARIATION, can be by water tank raw water position H1And the water level H after material is added2The particle volume of material, the i.e. particle of material can be obtained Volume V=(H2-H1)S0, wherein S0For the floor space of water tank；
3) voidage P' is calculated：It, further can be by formula on the basis of obtaining material natural packing volume with particle volume：
Obtain the voidage P' of accumulation bulk granular material.
CN201810752643.XA 2018-07-10 2018-07-10 A kind of method of determining accumulation bulk granular material voidage Pending CN108801878A (en)

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CN111308056A (en) * 2020-04-17 2020-06-19 葛洲坝集团试验检测有限公司 Concrete slump inference method based on mix proportion and raw material performance
CN113917120A (en) * 2021-09-27 2022-01-11 同济大学 Method for testing stacking rate of rubbles by using drainage method and regulation and control method
CN114445469A (en) * 2022-02-15 2022-05-06 北京壬工智能科技有限公司 Unmanned aerial vehicle autonomous scheduling material stacking and counting device, system and method

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CN111308056A (en) * 2020-04-17 2020-06-19 葛洲坝集团试验检测有限公司 Concrete slump inference method based on mix proportion and raw material performance
CN111308056B (en) * 2020-04-17 2022-03-18 葛洲坝集团试验检测有限公司 Concrete slump inference method based on mix proportion and raw material performance
CN113917120A (en) * 2021-09-27 2022-01-11 同济大学 Method for testing stacking rate of rubbles by using drainage method and regulation and control method
CN114445469A (en) * 2022-02-15 2022-05-06 北京壬工智能科技有限公司 Unmanned aerial vehicle autonomous scheduling material stacking and counting device, system and method

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Application publication date: 20181113